Overview
The Texas Instruments LMR33630BRNXR is a SIMPLE SWITCHER® synchronous step-down DC/DC converter designed for rugged industrial applications. This device is part of the LMR33630 family, known for its ease of use and high efficiency. It can drive up to 3 A of load current from an input voltage range of 3.8 V to 36 V, making it versatile for various industrial needs. The converter features a compact design and integrates most necessary components, simplifying the PCB layout and reducing the need for external components.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.8 V to 36 V |
| Output Voltage Range | 1 V to 24 V |
| Output Current | Up to 3 A |
| RDS-ON Power MOSFETs | 75 mΩ / 50 mΩ |
| Control Mode | Peak-Current-Mode Control |
| Minimum On-Time | 68 ns |
| Switching Frequency | 400 kHz, 1.4 MHz, 2.1 MHz |
| Junction Temperature Range | –40°C to +125°C |
| Package Options | 8-pin HSOIC, 12-pin VQFN-HR |
| Peak Efficiency | > 95% |
| Operating Quiescent Current | 25 µA |
| Shutdown Quiescent Current | 5 µA |
Key Features
- Ultra-low EMI and switching noise
- Integrated compensation network and synchronous rectification
- Power-good flag and precision enable for flexible system interface
- Thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection
- Automatic frequency foldback at light load to improve efficiency
- High power conversion efficiency at all loads
- Functional Safety-Capable and AEC-Q100-qualified versions available
- HotRod™ package and parallel input current paths for high efficiency
Applications
- Rugged industrial applications
- Auxiliary power supplies for servo drives
- Protection relay modules
- Respiratory applications such as air blower and valve control
- General-purpose DC/DC conversion in harsh environments
Q & A
- What is the input voltage range of the LMR33630BRNXR?
The input voltage range is 3.8 V to 36 V.
- What is the maximum output current of the LMR33630BRNXR?
The maximum output current is up to 3 A.
- What are the available switching frequencies for the LMR33630BRNXR?
The available switching frequencies are 400 kHz, 1.4 MHz, and 2.1 MHz.
- What is the junction temperature range of the LMR33630BRNXR?
The junction temperature range is –40°C to +125°C.
- Does the LMR33630BRNXR have built-in protection features?
- What are the package options for the LMR33630BRNXR?
The device is available in 8-pin HSOIC and 12-pin VQFN-HR packages.
- What is the peak efficiency of the LMR33630BRNXR?
The peak efficiency is greater than 95%.
- Does the LMR33630BRNXR have low EMI and switching noise?
- Is the LMR33630BRNXR suitable for rugged industrial applications?
- Are there any evaluation modules available for the LMR33630BRNXR?
